A beaker in your laboratory drawer has an inside diameter of 6.8 cm and a height of 8.9 cm. Using the equation V= arh, calculate the volume of the beaker, expressed in milliliters.

Answers

Answer 1

Answer:

323.22 ml

Explanation:

Given that :

Diameter, d = 6.8cm

Height, h = 8.9cm

V = arh

Recall :

Volume, V = πr²h

Radius, r = diameter / 2 = 6.8 / 2 = 3.4cm

V = π * 3.4^2 * 8.9

V = 323.21961 cm³

Recall:

1ml = 1cm³

Hence,

323.21961 cm³ = 323.21961 ml

Volume = 323.22 ml


Related Questions

What does an ion have that an atom does not?

Answers

Answer:

Atoms are neutral; they contain the same number of protons as electrons. By definition, an ion is an electrically charged particle produced by either removing electrons from a neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative ion.

Explanation:

:)

write the rate expression for the following reaction. H2+1/2
O2 arrow H2O​

Answers

Answer:

[tex]r=-k[H_2][O_2]^{1/2}[/tex]

Explanation:

Hello!

In this case, according to the chemical reaction:

H2 + 1/2  O2 --> H2O​

Since both hydrogen and oxygen are the reactants and the rate laws are written in terms of the concentration of reactants and the rate constant, we obtain:

[tex]r=-k[H_2][O_2]^{1/2}[/tex]

Whereas the negative sign represents the consumption of those reactants and the power 1/2 the stoichiometric coefficient of oxygen in the reaction.

Best regards!

How many moles of KMnO4 are in 75g of KMNO4?

Answers

Answer:

0.64 mol

Explanation:

moles=mass/molar mass

n= 75/(39+14+4×16)

n=75/117

n = 0.64mol

Witch regard to the ph scale, a solution with a ph . A. Lower than 7 is considered basic

Answers

Answer:

false

Explanation:

if it is lower than 7 It is acid

Italian dressing contains olive oil and vinegar, which will separate out from each other if left to sit. This makes the dressing a:

Answers

Italian salad dressing would be a suspension

5) The stability of an atom is determined by
Re 1) P+n
2)P-n
3) P/N
4) N/P

Answers

Answer:

the answer p+n

Explanation:

Help, due tonight (2/19/2021) at 11:59pm!

Answers

Answer:

283549.68 J

Explanation:

From the question given above, the following data were obtained:

Mass (M) = 2.7 Kg

Initial Temperature (T₁) = 5.4 °C

Final temperature (T₂) = 30.5 °C

Specific heat capacity (C) = 4184 J/KgºC

Heat (Q) =?

The amount of heat energy needed can be obtained as follow:

Q = MC(T₂ – T₁)

Q = 2.7 × 4184 × (30.5 – 5.4)

Q = 11296.8 × 25.1

Q = 283549.68 J

Thus, the heat energy needed is 283549.68 J

I’m thinking it’s the last one but I’m not sure.

Answers

Answer:

0.71 g/cm^3

Explanation:

Density = Mass ÷ Volume

So you would do 112.5 ÷ 159.3 which gives the result 0.71

A student assembles ball bearings that are 0.19 inches in diameter into an FCC lattice using glue which makes for a 0.001 inch thick bond between bearings. What is the lattice constant in inches of this FCC crystal? Three significant digits and fixed point notation.

Answers

Answer:

the lattice constant is 0.270 inches

Explanation:

Given the data in the question;

For FCC lattice;

a = b = c, ∝ = β = α = 90°

from the image below;

AC = 0.19 + 0.19/2 + 0.19/2 + 2(0.001) inch

AC = 0.19 + 0.095 + 0.095 + 0.002

AC = 0.382 inches

Now using Pythagoras theorem

AC² = AB² + BC²

since a = b = c

AC² = a² + a²

(0.382)² = 2a²

2a² = 0.145924

a² = 0.145924 / 2

a² = 0.072962

a = √0.072962

a =  0.27011 ≈ 0.270 inches

Therefore, the lattice constant is 0.270 inches

what is a row of elements across the periodic table called

Answers

Answer:

a period

Explanation:

Answer: The row of elements across the periodic table is called "periods".

Explanation:

In the Periodic Table, there are seven rows of elements, which is called periods.

If a machine has an AMA of 1 what does this tell you about the RF and EF?

Answers

Answer:

Although you might think of a machine as complex system of gears, drive belts and and a motor, the definition physicists use is much simpler. A machine is simply a device that does work, and there are only six different types of simple machines. They include the lever, the pulley, the wheel and axle, the screw, the wedge and the inclined plane.

Explanation:

The mass fractions of a mixture of gases are 15 percent nitrogen, 5 percent helium, 60 percent methane, and 20 percent ethane with a total mixture molecular weight of 16.12 kg/kmole. Determine the mole fraction of each constituent, the partial pressure of each constituent when the mixture pressure is 1200 kPa and the apparent specific heats of the mixture when the mixture is at room temperature.

Answers

Answer:

Explanation:

mass fraction N₂ : He : CH₄ : C₂H₆ : : 15 : 5 : 60 : 20

mole fraction  N₂ : He : CH₄ : C₂H₆ : : 15/28 : 5/4 : 60/16 : 20/30

mole fraction  N₂ : He : CH₄ : C₂H₆ : : .5357  : 1.25 : 3.75 : .67

Total mole fractions = .5357 + 1.25 + 3.75 + 0.67 = 6.2057

mole fraction of N₂ =  .5357 / 6.2057 = .0877

mole fraction of He = 1.25 / 6.2057 = .20

mole fraction of CH₄ = 3.75 / 6.2057 = .6043

mole fraction of C₂H₆ = .67 / 6.2057 = .108

Partial pressure = total pressure x mole fraction

Partial pressure of N₂ = 1200 kPa  x .0877 = 105.24 kPa

Partial pressure of He = 1200 kPa  x .20  = 240 kPa

Partial pressure of CH₄ = 1200 kPa  x  .6043  = 725.16 kPa

Partial pressure of C₂H₆ = 1200 kPa  x .108    = 129.6 kPa

Consider the following elementary reaction:

2NO(g) → N2O2(g)

Suppose we let k1 stand for the rate constant for this reaction, and k-1 stand for the rate constant of the reverse reaction. Write the expression that gives the equilibrium concentration of NO in terms of k1, k-1. And the equilibrium concentration of N2O2.

Answers

Answer:

[tex][NO]=\frac{k_{-1}}{k_1} [N_2O_2][/tex]

Explanation:

Hello!

In this case, since the reaction may be assumed in chemical equilibrium, we can write up the rate law as shown below:

[tex]r=-k_1[NO]+k_{-1}[N_2O_2][/tex]

However, since the rate of reaction at equilibrium is zero, due to the fact that the concentrations remains the same, we can write:

[tex]0=-k_1[NO]+k_{-1}[N_2O_2][/tex]

Which can be also written as:

[tex]k_1[NO]=k_{-1}[N_2O_2][/tex]

Then, we solve for the concentration of NO to obtain:

[tex][NO]=\frac{k_{-1}}{k_1} [N_2O_2][/tex]

Best regards!

What type of energy does a bouncing ball have ?

Answers

Answer:

Kinetic

Explanation:

When the ball is falling towards the table, it has kinetic energy. This elastic potential energy is why the ball is able to bounce, or rebound. After the ball rebounds, the elastic potential energy is transformed into kinetic energy, but it will never possess as much kinetic energy as during its original fall.

Answer:

Explanation:

It has kinetic energy.

Hope it helped you.

Number of liters in 0.50 moles of O2

Answers

Answer:

there are about 11.2 liters

is magnesium oxide an ionic or covalent compound. what are the reasons?​

Answers

Answer:

ionic

Explanation:

the bonds that hold magnesium and oxygen together are formed between atoms that give electrons


5. If you advance the movie one frame, the knot at point A would be
a) in the same place b) higher
c) lower d) to the right
e) to the left
relative to the hand
6. If you advance the movie one frame, the pattern of the waves will be
a) in the same place
b) shifted right
c) shifted left
shifted up
e)
shifted down
7.
If the person starts over and moves his hand more quickly, the peaks of the waves will be
a) the same distance apart
b) further apart
c) closer together
8. If you lower the frequency of a wave on a string you will
a) lower its speed. b) increase its wavelength. c). lower its amplitude. d) shorten its period

Answers

Answer:

5. higher

6. shifted down

7. closer together  

8. increase its wave length

Explanation:

Aqueous sulfuric acid H2SO4 will react with solid sodium hydroxide NaOH to produce aqueous sodium sulfate Na2SO4 and liquid water H2O. Suppose 59. g of sulfuric acid is mixed with 86.9 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 2 significant digits.

Answers

Answer:

22 g of water

Explanation:

The balanced chemical equation is:

H₂SO₄(aq) + 2 NaOH(aq) → Na₂SO₄(aq) +2 H₂O(l)

1 mol of H₂SO₄ reacts with 2 moles of NaOH to produce 2 moles of H₂O.

First, we have to convert the moles to grams by using the molecular weight (Mw) of each compound:

Mw H₂SO₄ = (1 g/mol x 2 H) + 32 g/mol S + (16 g/mol x 4 O) = 98 g/mol

        mass of H₂SO₄ = moles x Mw = 1 mol x 98 g/mol = 98 g

Mw NaOH = 23 g/mol Na + 16 g/mol O + (1 g/mol H) = 40 g/moL

        mass of NaOH = 2 moles x 40 g/mol = 80 g

Mw H₂O = (1 g/mol x 2 H) + 16 g/mol O = 18 g/moL

        mass of NaOH = 2 moles x 18 g/mol = 36 g

Now, we have to determine which is the limiting reactant. The stroichiometric ratio is 98 g H₂SO₄/80 g NaOH. We have 86.9 g of NaOH, so we need the following amount of H₂SO₄:

98 g H₂SO₄/80 g NaOH x 86.9 g NaOH = 106.4 g H₂SO₄

As we need more H₂SO₄ (106.4 g) than we have (59 g), the limiting reactant is H₂SO₄.

Finally, we calculate the mass of H₂O produced with the limiting reactant. The stoichiometric ratio is 36 g H₂O/98 g H₂SO₄, so we multiply the actual mass of H₂SO₄ by the stoichiometric ratio to calculate the maximum mass of H₂O produced:

mass of H₂O = 36 g H₂O/98 g H₂SO₄ x 59 g H₂SO₄ = 21.7 g ≅ 22 g

Which of the following are correct for zero-order reactions?
A. A higher concentration of reactants will not increase the reaction rate.
B. The units for the rate constant and the rate of reaction are the same.
C. The rate of reaction does not equal the rate constant.
D. The concentration of the reactants changes nonlinearly.
E. A zero-order reaction slows down as the reaction proceeds.

Answers

Answer:

The answer is "Choice A and Choice B"

Explanation:

The Zero-Order reactions are usually found if a substrate, like a surface or even a catalyst, is penetrated also by reactants. Its success rate doesn't depend mostly on the amounts of the various reaction in this reaction.

Let the Rate = k

As [tex]\frac{dx}{dt} \ rate\ \ K_0[/tex] doesn't depend on reaction rate, a higher reaction rate does not intensify the reaction.

By the rate [tex]k_0 =\frac{dx}{dt},[/tex] the created based and the reaction rate is about the same.

Below statement are correct about zero order reaction.

higher concentration of reactants will not increase the reaction rate. The units for the rate constant and the rate of reaction are the same.

What is Zero order reaction?

Zero-order reaction is a chemical reaction in which the rate of chemical reaction does not change with increase or decrease in the concentration of the reactants.

Example is the decomposition of ammonia to nitrogen and hydrogen. the rate does not vary, it is the same.

Therefore, Below statement are correct about zero order reaction.

higher concentration of reactants will not increase the reaction rate. The units for the rate constant and the rate of reaction are the same.

Learn more about zero order reaction from the link below.

https://brainly.com/question/13314785

Which of the following would make a solution?
A. Oil in water
B. Sugar in water
C. Ice in water
D. Sand in water
SUBM

Answers

The combination from the available option that will make a solution would be sugar and water.

What are solutions?

Solutions are obtained when solutes dissolve in solvents.

In other words, a solute must be able to dissolve in a solvent before a solution can be formed.

Oil and water cannot mix, and thus, cannot form a solution. Sand is insoluble in water and ice and water are the same.

Thus, the only option left is sugar and water. Sugar dissolves in water to form a sugar solution.

More on solutions can be found here: https://brainly.com/question/7932885

#SPJ2

Hi do you know this?​

Answers

Answer:

2

Explanation

It seems logical

It’s the second answer choice

Consider the following reaction where K. = 9.52 10 2 at 350 K.
CH,(g) + CC14(2)—2CH2Cl2(g)
A reaction mixture was found to contain 2.21*10-2 moles of CH4(E), 3.8710-2 moles of CC1,(g) and 1.06-10-2 moles of CH,C12(2), in
a 1.00 liter container
Is the reaction at equilibrium?
If not, what direction must it run in order to reach equilibrium?
The reaction quotient, Qc equals
The reaction
A. must run in the forward direction to reach equilibrium
B. must run in the reverse direction to reach equilibrium
C. is at equilibrium

Answers

Answer:

The correct answer is A :))

Calculate: Press Reset. Start with 1.900 × 10 24(or 19.00 × 10 23 ) molecules of Cu2O. A. Calculate the number of moles: B. Use the Gizmo to verify your calculation. Were you correct? C. Is the method for converting molecules to moles the same as that for atoms?

Answers

Answer:

1.661 mol.

Explanation:

Hello!

In this case, since the Avogadro's number allows us to relate the number of formula units in one mole of the substance; we need to keep in mind that elements are related by atoms and compounds by molecules, it means:

[tex]1 mol = 6.022x10^{23}atoms\\\\1 mol = 6.022x10^{23}molecules[/tex]

Thus, for copper (I) oxide, we compute the moles, given the atoms as shown below:

[tex]n = 1.900x10^{24}molecules*\frac{1mol}{ 6.022x10^{23}molecules} \\\\n = 1.661mol[/tex]

Thus, the method we use is the same.

Best regards

Imagine a made-up pol

b. Write both the formula and the name for the compound formed when Cu2+

combines

with boritate? (2 pts)

Answers

Answer:

No change to the cation  Add -ide to the anion

Question 1 and .2

Explanation:

Based on your answers to Question 3 above, why do you think that, as a general practice, when antibiotics

(including azithromycin) are prescribed to adults, the same dose is usually given, regardless of weight of the

patient?

Answers

Answer:

See explanation below

Explanation:

Since question 3 is not here, I will answer based on a general perspective.

The dosage of most antibiotics and drugs generally are prescribed without considering the weight of adults. Unlike children that are given dosages based on their weight.

The weight of adults is not considered because the extent to which they weigh is majorly as a result of their adipose (fat) tissue. And the adipose tissue does not determine the tolerance level of drugs. So an adult weighing 200kg and another weighing 50kg will be able to tolerate the same dosage of medications.

Because the adults are adults with fully developed organs, their weight does not matter when prescriptions are made.

Calculate the molar it’s of a solution containing 29g of glucose dissolved in 24.0 g of water

Answers

It would be 5g of glucose solution

QUESTION 5
Which of the following is NOT electromagnetic wave?
O A. Sound wave.
O B. Microwave.
O C. Infrared wave.
O D. X-Ray.

Answers

i think A is the correct answer

Answer:

Beta Rays

Beta Rays are not Electromagnetic Waves

Beta rays also known as beta radiation is obtained through the emission of an electron. Beta rays are not electromagnetic waves because they are charged particles and are capable of getting deflected by the magnetic field.

Which of the following chemical reactions is a single displacement reaction?
A. 2Na + O2→
Na2O
B. 2A1 + 3Zn(NO3)2 2AI(NO3)3 + 3Zn​
C. Pb(NO3)2 + 2KBr → PbBr2 + 2KNO3
D. 2Fe(OH)3 Fe2O3 + 3H2O

Answers

Answer:

B. 2A1 + 3Zn(NO3)2 --> 2AI(NO3)3 + 3Zn​

Explanation:

In the chemical equation, you can see that 2Al replaced 3Zn with (NO3)3 in the product, thus it is a single displacement reaction.

Answer:

B. 2A1 + 3Zn(NO3)2 --> 2AI(NO3)3 + 3Zn​

Explanation:

An unknown solid is added to water in a calorimeter. The temperature of the water increases. What does this say about the reaction? A) The reaction is exothermic. B) The reaction is endothermic. C) The reaction has absorbed heat from the solution. D) The reaction has released heat to the solution. E) Both A and D are correct.

Answers

Answer:

Option A is correct.

Option D is correct.

E is the correct answer

Explanation:

This a theoretical calorimetry problem that can be solved by thermodynamic concepts.

Our system is the unknown solid. If the temperature of water has increased, we can think, that the heat from the metal was absorbed by water, which is our surrounding. If in the analysis of the situation we use a calorimeter, knowing that it is an isolated system, which does not allow the entry or exit of heat, we can conclude that the heat released is equal to the heat absorbed.

In conclusion, the thermodynamic system is constituted by the chemical reaction. In this case, the surrounding is made up of water and the calorimeter itself.

If the reaction is exothermic, the heat released by the reaction will be absorbed by the surrounding . Then, the final temperature will be higher than the initial temperature. If the reaction is endothermic, the heat absorbed by the reaction will be released by the environment. So, the final temperature will be lower than the initial temperature.

The rate constant for a certain reaction is measured at two different temperatures:

temperature k
376.0 °C 4.8 x 10^8
280.0 °C 2.3 x 10^8

Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy Ea for this reaction.

Answers

Answer: The activation energy Ea for this reaction is 22689.8 J/mol

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

[tex]ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}][/tex]

[tex]k_1[/tex] = rate constant at temperature [tex]T_1[/tex] = [tex]2.3\times 10^8[/tex]

[tex]k_2[/tex] = rate constant at temperature [tex]T_2[/tex] = [tex]4.8\times 10^8[/tex]

[tex]E_a[/tex]= activation energy = ?

R= gas constant = 8.314 J/kmol

[tex]T_1[/tex] = temperature = [tex]280.0^0C=(273+280)=553K[/tex]

[tex]T_2[/tex] = temperature = [tex]376.0^0C=(273+376)=649K[/tex]

Putting in the values ::

[tex]ln \frac{4.8\times 10^8}{2.3\times 10^8} = \frac{-E_{a}}{8.314}[\frac{1}{649} - \frac{1}{553}][/tex]

[tex]E_a=22689.8J/mol[/tex]

The activation energy Ea for this reaction is 22689.8 J/mol

Other Questions
I need nerds to do this question, get it right you get brainiest Medtronic, Inc., is a medical technology company that competes for customers with St. Jude Medical S.C., Inc. James Hughes worked for Medtronic as a sales manager. His contract prohibited him from working for a competitor for one year after leaving Medtronic. Hughes sought a position as a sales director for St. Jude. St. Jude told Hughes that his contract with Medtronic was unenforceable and offered him a job. Hughes accepted. Medtronic filed a suit, alleging wrongful interference. Which type of interference was most likely the basis for this suit? Medtronic, Inc., is a medical technology company that competes for customers with St. Jude Medical S.C., Inc. James Hughes worked for Medtronic as a sales manager. His contract prohibited him from working for a competitor for one year after leaving Medtronic.1. Is the clause in this case commonly known as a non-compete clause? 2. Hughes sought a position as a sales director for St. Jude. St. Jude told Hughes that his contract with Medtronic was unenforceable and offered him a job. Hughes accepted. Medtronic filed a suit, alleging wrongful interference. What are the elements of the tort of wrongful interference with a contractual relationship?A.There is a contract between two parties/ One party is seeking a greater market share for their product/ A third party knows the contract existsone party is targeting the others' customers/ A third party is inducing another to break a contract).B. (There is a contract between two parties/ One party is seeking a greater market share for their product/ A third party knows the contract existsone party is targeting the others' customers/ A third party is inducing another to break a contract).C. (There is a contract between two parties/ One party is seeking a greater market share for their product/ A third party knows the contract existsone party is targeting the others' customers/ A third party is inducing another to break a contract).3. Medtronic is suing for wrongful interference with a _______.4. Who are the parties to the initial contract?5. _____is the third party who knew about the contract.6. St. Jude learned about the contract and non-compete clause between Hughes and Medtronic from _____.7. It is _____ that St. Jude intentionally induced Hughes to breach his contract with Medtronic.8. St. Jude ______before he left Medtronic.9. What did St. Jude represent regarding the noncompete clause? 10. Was the noncompete clause enforceable? 11. Did it matter if the clause was unenforceable? 12. Based on these facts, does it appear that St. Jude intentionally induced Hughes to break his contract with Medtronic? 13. Is Hughes liable for intentional interference with a contract? 14. Why?15. Hughes is _______ to be held liable for breach of contract.16. What if the effects were different?17. _____ would be another factor the courts would consider. ILL PUT U AS BRANLIEST!!!!!! Constitutionally, to what does the term incorporation refer?A)The Bill of Rights affects only laws passed by Congress.B)States cannot make any laws affecting the creation of businesses.C)Congress cannot make any laws affecting the creation of businesses.D)Parts of the Bill of Rights applies to the Federal and state governments. Britney Spears, Christina Aguilera, and Jessica Simpson represent whichmusic style of the 1990s?A. Alternative rockB. Teen popC. Girl bandsD. Glam rock During the middle ages, the city of Constantinople wasAthe largest city in the worldBprotected by high mountains and desertsCthe holiest city to ChristiansDthe home of the Pope An arctic weather balloon is filled with 4.96 L of helium gas inside a prep shed. The temperature inside the shed is 6. C. The balloon is then taken outside, where the temperature is 2. C. Calculate the new volume of the balloon. The perimeter of a rectangular field that measures 2 feet by 18 inches is _________ ft. Please help! Which part of the United States government regulates communication? A) FTC B) FCC C) SEC D) OSHA Which of the following statements about UK and UL is true?O A. JL is longer than JK.O B. UK and JL are the same length.c. UK is 7 units longD. UK is longer than UL A gambler claims that horses in a horse race that start closer to the rail have an advantage over horses that start further from the rail because the horses closer to the rail have a shorter distance to travel to win the race. In a sample of 120 races, the following data show the number of winners from each starting position. If the starting position is not a factor then each starting position should have produced 20 winners. Starting position: 1 2 3 4 5 6# of Winners: 25 22 18 19 21 15Test the hypothesis at the 5% level of significance to see if starting position is a factor. The Lady, or the Tiger The king's sense of justice can best be describedas...a. Forgivingb. CorruptC. Mercifuld. Absolute The button on Keith's shirt has a radius of 3 cm.Calculate the circumference of the button onKeith's shirt. Find the equation of the linear function represented by the table below in slope-intercept form.18212316420 Jess has 5 bouquets with 12 roses in each bouquet. Kyle has 12 bouquets with 5 roses in each bouquet. Which equation uses the commutative property to show that Jess and Kyle have an equal number of roses? Automatically withdrawing limbs to escape pain shows does anyone know the answer to this what do you call this form of quadratic function y=ax2+bx+c? how about y=a(x-h)2+k HoWs this for Melanie Martinez? what is interest? Help me please thank u. 3/4 x 25 please bro and i need to make this longerrrr